We complement the correlations of the [C ii] emission with gas and dust tracers in the following with new PDR model runs that are based on the models of [1]} with updates of [2]} and [3]}. [4]} describe the procedure by which the emission from an edge-on PDR of a given line-of-sight depth (\(A_\mathrm {V,los}\) ) is computed from the output of a 1D face-on PDR model. Compared to those earlier models, we have updated the collisional excitation rates and chemical rates in the models. In particular, we adopt the [O i] collisional rates with H and H\(_2\)  from [5]} (and F. Lique priv. comm.). Updates to chemical rates are noted in [6]}. More recently, we updated the photorates to those from [7]} and adopted the exponential integral formalism for the depth dependence due to dust. Additional changes to the chemical rates include oxygen chemistry rates from [8]} and [9]}, and carbon chemistry rates from [10]}. In order to compute synthetic line emission intensities we assume a Doppler line width of \(\Delta v = 1.5\,\mathrm {km\,s}^{-1}\) .
